Preparation of Niobium Oxide Films as Humidity Sensor
摘要:
Niobium oxide films were prepared on a glass plate by dipping in a viscous solution of niobium penta-isopropoxide dissolved in 2-propanol. The films had humidity-sensitive electrical resistance with good selectivity and an extremely high surface area even after the iterative adsorption/desorption cycles of water vapor, suggesting that the films could be used as a humidity sensor element.
DOI:
10.1246/cl.1990.1729
作为产物:
描述:
{(EtO)Al(μ-OEt)3Co(μ-O-i-Pr)3Nb(O-i-Pr)3} 以
neat (no solvent) 为溶剂,
生成 niobium isopropoxide
参考文献:
名称:
Garg, (Mrs) G.; Singh, A.; Mehrotra, R. C., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1991, vol. 30, # 8, p. 688 - 691
Metal alkoxides with polymerizable ligands: synthesis and molecular structure of [Nb4(μ-O)4(μ, η2-O2CMe-CH2)4(OPri)8]
作者:Liliane G. Hubert-Pfalzgraf、Valerie Abada、Sabine Halut、Jacques Roziere
DOI:10.1016/0277-5387(96)00330-0
日期:1997.1
H-McOH], and subsequent controlled microhydrolysis, gave [Nb 4 (μ-O) 4 (μ, η 2 -Mc) 4 (OPr i ) 8 ] which was characterized by X-ray diffraction. The compound is based on a planar Nb 4 O 4 core with terminal isopropoxide ligands, while the functional car☐ylates act as bridging chelating ligands. The Nb-O bond lengths vary from 1.840(3) to 2.203(4)A˚and follow the order Nb-OR ∼ Nb-O
Heterometallic alkoxides and oxoalkoxides as intermediates in chemical routes to mixed metal oxides
作者:Liliane G. Hubert-Pfalzgraf
DOI:10.1016/s0277-5387(00)80254-5
日期:1994.4
Metalalkoxides are often associated with more accessible precursors such as carboxylates, nitrates, β-diketonates in chemical routes to complex metaloxides. The molecular constitution of such solutions has been examined for systems related to ferroelectrics and based on niobium, titanium or zirconium alkoxides. A variety of oxo or non-oxo mixed-metal acetatoalkoxides have been characterized in the
金属醇盐通常与更易接近的前体(例如羧酸盐,硝酸盐,β-二酮酸盐)以化学途径缔合成复杂的金属氧化物。已经针对与铁电相关的系统以及基于铌,钛或锆的醇盐的体系检查了这种溶液的分子组成。在固体(单晶X射线)和溶液(FT-IR,多核NMR)中,已表征了多种含氧或非含氧的混合金属乙酰氧基醇盐。已经估计了通过水解-缩聚从这些分子到最终材料的转化。分别通过热重分析和X射线衍射表征了无定形和结晶粉末。讨论了控制前体中金属之间化学计量的策略。同质醇盐Pb使用6 Nb 4 O 4(OEt)24和BaTi 4(OEt)18作为了解化学转化的模型。